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A Portable VHF-UHF Roll-up J-pole Antenna
- A description is then given on how this dual band principal is applied to a fully portable roll-up J-pole antenna
post 04 Feb 2025
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Handitenna 440 Beam Antenna
Those calculations were made using Yagimax antenna modeling software
Helix antenna design and construction
Construction details for antennas. In this case the description and design info for a helix antenna. This antenna, which is very forgiving in tolerances, is an ideal feed for offset fed
Helix antenne 1296 MHz 25 TURNS
Download Helix Calc programme
Homebrew 70cm Quad Antenna
A full wavelength in the 70cm band means; a 70cm 27.6 inches long antenna! In a quad this means that every side is 17.5cm 6.9 inches long, almost nothing
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Those calculations were made using Yagimax antenna modeling software
Construction details for antennas. In this case the description and design info for a helix antenna. This antenna, which is very forgiving in tolerances, is an ideal feed for offset fed
Download Helix Calc programme
A full wavelength in the 70cm band means; a 70cm 27.6 inches long antenna! In a quad this means that every side is 17.5cm 6.9 inches long, almost nothing
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
Pcs Electronics RF power amplifiers-pallets archives-ABC of FM AM DAB+ DRM radio transmitters